php progress bar help??????

hey great guys over there.....i wanna make display the progress bar at the page start up, it should show the 'progress bar' during the page is loading.....when the page is completely loaded ,then progress bar should disappear...and ...page should be shown.....i think u got my point....so help me with the related php progress bar scripts.......help from yours are always welcome.....a great thanks for reading ...

This would be a javascript or a flash function, you cannot do this using php.